A Scullyist is somebody who is well-versed in the history, interpersonal relationships, characteristics and emotional complexities of Dana Scully from 'The X-Files' and deeply sympathises with the character.

They also attempt to understand and analyse the plots and other characters of 'The X-Files' from Scully's point of view.

Although s/he loves Mulder and is a huge X-Phile all-round, s/he is a Scullyist at heart.